Specimens other than blood may need to be transported by health care workers using special handling procedures. In the laboratory department, these specimens may include:

Which of the following molecules is a senescence signal when it is exposed on the outer leaflet of the erythrocyte?

a. Band 3 b. Ankyrin c. Phosphatidylethanolamine (PE) d. Phosphatidylserine (PS)

Which means of central tendency is most often referred to as the average?

A. Mean B. Median C. Mode